CN201038349Y - A grounding device for high-voltage single-core power cables - Google Patents

Abstract

The utility model discloses a grounding device for high pressure single core power cable which is mainly used in direct ground or ground protection of high pressure single core power cable metal sheath. A binding post(2) is connected with a line cable by inserting manner. The line end of corresponding to the tank body(1) and the binding post(2) is sleeved with a line cover(3) and a sealing cover(4) corresponding to the line cable. The binding post(2) and a ground block(5) in the tank body(1) are connected with a connecting piece or direct connection. An insulated material(6) moulds the binding post(2), the ground block(5) and the connecting piece in the tank body(1). The connecting piece is a ground protective tank when being a protector(7). The direct connection of the binding post(2) and the ground block(5) is a direct ground tank. The utility model is a full sealing grounding device for high pressure single core power cable with small volume, light weight, convenient installation and water, wet and fire proof.

Description

A grounding device for high-voltage single-core power cables

technical field

The utility model relates to a grounding device for a high-voltage single-core power cable, in particular to a direct grounding box and a grounding protection box for a high-voltage single-core power cable.

Background technique

With the rapid development of my country's national economy, the demand for electricity continues to rise. The construction and development of high-power power transmission network is very rapid, and the use of high-voltage single-core power cables is very common. In order to ensure the safety and transmission efficiency of the power network, high-voltage single-core power cables must be reliably grounded. At present, the grounding devices on the market are relatively large in size and heavy in weight; their waterproof performance cannot meet the requirements of waterlogging prevention; Complicated, the sheath protector end is not separated from the incoming line end, and the waterproof and moisture-proof performance is relatively poor; the box body is welded with steel plates, and there are hidden dangers in waterproof and insulation performance. During installation, the box cover must be opened to connect the ground wire, so the sealing performance is poor, and the installation is very troublesome.

Utility model content

The technical problem to be solved by the utility model is to provide a grounding device for high-voltage single-core power cables with small size, light weight, convenient installation, waterproof, moisture-proof and fire-proof.

In order to solve the above-mentioned technical problems, the grounding device for high-voltage single-core power cables provided by the utility model includes a box body, a terminal, and a grounding block. The terminal and the incoming cable are connected by plugging and unplugging. The incoming line end corresponding to the terminal on the box is set with an incoming line sleeve and a sealing sleeve corresponding to the incoming cable, and the terminal and the grounding block in the box are connected with a sheath protector The insulating material pours the terminal post, the grounding block and the sheath protector into the box.

The sealing sleeve is a tapered sealing sleeve.

The sheath protector is a ZnO varistor protection element.

A grounding device for a high-voltage single-core power cable, including a box body, a terminal, and a grounding block. The corresponding incoming line end is set with an incoming line sleeve and a sealing sleeve corresponding to the incoming cable, the terminal post in the box is directly connected to the grounding block, and the insulating material connects the terminal post and the grounding block Pouring in the box.

The sealing sleeve is a tapered sealing sleeve.

The grounding device for high-voltage single-core power cables adopts the above-mentioned technical scheme. The box body is made of stainless steel or aluminum alloy, etc., and the insulating material is integrally poured into the box body with terminal posts, grounding blocks and sheath protectors. It has good water resistance, Small size, light weight, good insulation performance; when connected as a sheath protector, the sheath protector is a ZnO varistor protection element, which has excellent volt-ampere characteristics, and is used for high-voltage single-core power cables using the sheath protector The grounding device is the grounding protection box; if the terminal is directly connected to the grounding block, the grounding device for the high-voltage single-core power cable is the direct grounding box. The tapered sealing sleeve is made of rubber, which has the characteristics of good elasticity, aging resistance, waterproof and moisture-proof, safe and reliable, and convenient installation. It not only saves installation time and waterproof strips, but also improves the reliability of installation. The terminal post is cast and covered with insulating material, which separates the incoming terminal from the connector, which improves the waterproof performance of the product. The terminal post and the incoming cable are connected by plugging and unplugging, which makes the installation very convenient and fast.

The utility model is a grounding device for fully sealed high-voltage single-core power cables with small volume, light weight, convenient installation, waterproof, moisture-proof and fireproof.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is another structural diagram of the utility model.

Detailed ways

Referring to Figure 1, the terminal 2 is connected to the incoming cable by plugging and unplugging, and the incoming line end corresponding to the terminal 2 on the box body 1 is equipped with an incoming line sleeve 3 and a tapered sealing sleeve 4 corresponding to the incoming cable , the terminal post 2 and the ground block 5 in the box body 1 are connected with a sheath protector 7, the sheath protector 7 is a ZnO varistor protection element, and the insulating material 6 connects the terminal post 2, the ground block 5 and the sheath The protector 7 is poured in the box body 1 .

Referring to Fig. 1, the casing 1 is made of stainless steel or aluminum alloy, and the insulating material is used to cast the terminal 2, the ground block 5 and the sheath protector 7 in the casing 1, which has good waterproof, small size, light weight, Good insulation performance; the sheath protector 7 adopts ZnO varistor protection element, which has excellent volt-ampere characteristics. The grounding device for high-voltage single-core power cables using the sheath protector 7 is the grounding protection box; the tapered sealing sleeve 4 is made of rubber, and has the characteristics of good elasticity, aging resistance, waterproof and moisture-proof, safe and reliable, and convenient installation. It not only saves the installation time and the strip material used for waterproofing, but also improves the reliability of installation. The terminal post 2 is cast and covered with insulating material, which separates the incoming line end from the sheath protector 7, which improves the waterproof performance of the product. The terminal post 2 and the incoming cable are connected by plugging and unplugging, which makes installation very convenient , fast. The volume and weight of the product are reduced, and it is very suitable for high-altitude operations.

Referring to Figure 2, the terminal 2 is connected to the incoming cable in a plug-and-pull manner, and the incoming line end corresponding to the terminal 2 on the box body 1 is equipped with an incoming line sleeve 3 and a tapered sealing sleeve 4 corresponding to the incoming cable , the terminal 2 and the grounding block 5 in the box 1 are directly connected, and the insulating material 6 pours the terminal 2 and the grounding block 5 in the box 1 .

Referring to Fig. 2, the casing 1 is made of stainless steel or aluminum alloy, and the insulating material 6 pours the terminal 2 and the ground block 5 into the casing 1, which has good waterproof performance, small size, light weight and good insulation performance; The grounding device for high-voltage single-core power cables directly connected to the grounding block 5 and the terminal 2 is the grounding box; the tapered sealing sleeve 4 is made of rubber, which has good elasticity, aging resistance, waterproof and moisture-proof, safe and reliable, and easy installation And other features, not only saves installation time and waterproof tape, but also improves the reliability of installation. The terminal post 2 and the grounding block 5 are cast and covered with insulating material, which improves the waterproof performance of the product. The terminal post 2 and the incoming cable are connected by plugging and unplugging, which makes the installation very convenient and fast. The grounding device for the high-voltage single-core power cable is the direct grounding box.

Claims (5)

1. A grounding device for a high-voltage single-core power cable, comprising a box body (1), a terminal (2), and a grounding block (5), characterized in that: the terminal (2) and the incoming cable adopt Connected in a plug-and-pull manner, the inlet end of the box (1) corresponding to the terminal (2) is fitted with an inlet sleeve (3) and a sealing sleeve (4) corresponding to the incoming cable , the terminal (2) and the ground block (5) in the box (1) are connected with a sheath protector (7), and the insulating material (6) connects the terminal (2) and The ground block (5) and the sheath protector (7) are poured into the box (1). 2. The grounding device for high-voltage single-core power cables according to claim 1, characterized in that: the sealing sleeve is a tapered sealing sleeve (4). 3. The grounding device for high-voltage single-core power cables according to claim 1 or 2, characterized in that: the sheath protector (7) is a ZnO varistor protection element. 4. A grounding device for a high-voltage single-core power cable, comprising a box body (1), a terminal (2), and a grounding block (5), characterized in that: the terminal (2) and the incoming cable adopt Connected in a plug-and-pull manner, the inlet end of the box (1) corresponding to the terminal (2) is fitted with an inlet sleeve (3) and a sealing sleeve (4) corresponding to the incoming cable , the terminal (2) in the box (1) is directly connected to the grounding block (5), and the insulating material (6) pours the terminal (2) and the grounding block (5) In the said casing (1). 5. The grounding device for high-voltage single-core power cables according to claim 4, characterized in that: the sealing sleeve is a tapered sealing sleeve (4).

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